<template>
  <el-upload class="avatar-uploader" action="#" :show-file-list="false" :http-request="uploadFileToBackend">
    <!-- (自动上传)action是上传地址 人资项目不需要 人资项目(手动上传)  -->
    <!-- show-file-list不展示列表 -->
    <img v-if="value" :src="value" class="avatar">
    <i v-else class="el-icon-plus avatar-uploader-icon" />
  </el-upload>
</template>

<script>
import { upload } from '@/api/upload';
export default {
  name: 'ImageUpload',
  props: {
    value: {
      type: String,
      default: ''
    }
  },
  methods: {
    // 检查函数 判断文件的类型还有大小 return  true(继续上传)/false(停止上传)
    beforeAvatarUpload(file) {
      // jpeg png gif bmp

      const isJPG = ['image/jpeg', 'image/png', 'image/gif', 'image/bmp'].includes(file.type)
      const isLt2M = file.size / 1024 / 1024 < 5 // 5M

      if (!isJPG) {
        this.$message.error('上传头像图片只能是 JPG PNG GIF BMP 格式!')
      }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 5MB!')
      }
      return isJPG && isLt2M
    },
    // 自定义上传方法
    async uploadFileToBackend(file) {

      const formData = new FormData();
      formData.append('file', file.file); // 将文件添加到 FormData

      try {
        const response = await upload(formData); // 调用封装的 upload 方法

        // 更新父组件的值（双向绑定）
        this.$emit('input', response);
      } catch (error) {
        console.error('上传失败:', error);
        this.$message.error('文件上传失败，请稍后重试！');
      }
    }
  },

}
</script>

<style>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.avatar-uploader .el-upload:hover {
  border-color: #409EFF;
}

.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 75px;
  height: 75px;
  line-height: 75px;
  text-align: center;
}

.avatar {
  width: 75px;
  height: 75px;
  display: block;
}
</style>